DirectX Software Development Kit

Download the complete DirectX SDK, which contains the DirectX Runtime and all DirectX software required to create DirectX compliant applications in C/C++ and C#.
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    454.6 MB

      This DirectX SDK release contains updates to tools, utilities, samples, documentation, and runtime debug files for x64 and x86 platforms.

      For additional information please see Microsoft DirectX Developer Center along with reviewing the Readme for last-minute updates.
  • Supported Operating System

    Windows Server 2003, Windows Server 2003 R2 (32-Bit x86), Windows Server 2003 R2 Datacenter Edition (32-Bit x86), Windows Server 2003 R2 Datacenter x64 Edition, Windows Server 2003 R2 Enterprise Edition (32-Bit x86), Windows Server 2003 R2 Standard Edition (32-bit x86), Windows Server 2003 R2 Standard x64 Edition , Windows Server 2003 R2 x64 editions, Windows Server 2003 Service Pack 2, Windows Server 2003 Service Pack 2 x64 Edition, Windows Server 2003 x64 editions, Windows Server 2003, Datacenter Edition (32-bit x86), Windows Server 2003, Datacenter x64 Edition, Windows Server 2003, Enterprise Edition (32-bit x86), Windows Server 2003, Enterprise x64 Edition, Windows Server 2003, Standard Edition (32-bit x86), Windows Server 2003, Standard x64 Edition, Windows Server 2003, Web Edition, Windows Small Business Server 2003 , Windows Vista, Windows Vista Business, Windows Vista Business 64-bit edition, Windows Vista Business N, Windows Vista Enterprise, Windows Vista Enterprise 64-bit edition, Windows Vista Home Basic, Windows Vista Home Basic 64-bit edition, Windows Vista Home Basic N, Windows Vista Home Premium, Windows Vista Home Premium 64-bit edition, Windows Vista Starter, Windows Vista Starter N, Windows Vista Ultimate, Windows Vista Ultimate 64-bit edition, Windows XP, Windows XP 64-bit, Windows XP Embedded, Windows XP Embedded Service Pack 1, Windows XP Embedded Service Pack 2 , Windows XP Home Edition , Windows XP Home Edition N, Windows XP Media Center Edition, Windows XP Professional Edition, Windows XP Professional N, Windows XP Professional x64 Edition , Windows XP Service Pack 1, Windows XP Service Pack 2, Windows XP Starter Edition, Windows XP Tablet PC Edition

      • Using Managed DirectX ( MDX ) requires both Visual Studio .NET and the .NET framework for development. To run MDX .NET applications, you must install the .NET Framework.
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    • This section contains the following:

      What's New in the June 2007 DirectX SDK

      This version of the DirectX SDK contains the following new features, tools, and documentation.

      New RPC Editing Window and Other Improvements for the XACT User Interface

      The XACT authoring tool includes an all-new runtime parameter control (RPC) editing window, which features multiple new curve types, zoom and pan controls, enhanced point editing and selection, mirror editing, and multilevel undo/redo for all RPC edits. Separately, the XACT GUI now properly supports both relative and absolute paths for content. Note that as part of this work, a project must be created and saved before it can be edited. This includes specifying a project path.

      Listener Cones and Per-Source Radius and Elevation Control in X3DAudio

      X3DAudio has two new features: listener cones, and per-source radius and elevation control. Listener cones provide directionality for the listener, like that already available for emitters. X3DAudio also now allows the developer to specify an inner radius and angle. The inner radius allows the developer to define smooth spatial transitions around the listener. This can help avoid sharp discontinuities as sounds pass through, or over or under, the listener. The inner radius angle specifies an area of space that takes elevation into account when the volume values for each speaker are determined.

      Improvements to PIX for Windows

      This release of PIX for Windows includes several new features.

      • There is now source-level shader debugging for Direct3D 10 applications. This functionality was previously available only for Direct3D 9 applications.
      • Developers who run PIX on Windows Vista can now capture GPU timing information together with the CPU timing information. This information can help determine if an application is GPU or CPU bound. GPU timing captures are available only on Windows Vista.
      • You can now select a checkbox in the experiment target program settings window to disable D3DX analysis. This option can help improve performance and avoid some issues with applications that call certain D3DX functions.
      New Version of GDF Maker Supports the New Korean Ratings System and Updates Support for the Japanese Ratings System

      GDF Maker now has support for the new Korean ratings systems ("Game Rating Board"). Operating system support for this rating system will ship with Windows Vista SP 1. Developers can add their ratings for the new system to their GDF project now. The ratings are ignored by Windows Vista RTM, but they will be present for Windows Vista SP 1. For more information on the new ratings system, see

      Additionally, support for the Japanese ratings system (CERO) has been updated to deal with the A, B, C, D, and Z ratings. Existing projects are automatically updated if they use older CERO data.

      Direct3D9 and DirectDraw Headers Now Include the Windows Vista Direct3D9Ex API

      The Direct3D9 and DirectDraw headers have been updated to include the Windows Vista Direct3D9Ex API. These new methods, structures, and constants can be eliminated from the header, by defining the preprocessor symbol D3D_DISABLE_9EX before including the headers. Updated documentation for this Windows Vista API is integrated into the DirectX SDK. Samples for Direct3D9Ex can be found in the Microsoft Windows SDK for Windows Vista.

      New Samples

      This release includes three new samples. All graphics samples have been updated to use the new version of DXUT that supports rendering with either Direct3D 9 or Direct3D 10. The old version of DXUT that supported only Direct3D 9 has been removed.

      • The Advanced Shader Authoring Workshop GDC 2007 is a series of guided lessons that are derived from the Advanced Shader Authoring Workshop that was presented at the Game Developers Conference 2007. The lessons are divided into six Visual C++ project files that contain near-complete HLSL code. Each project requires the student to add the missing code that is needed to implement the target graphics technique for the lesson. This workshop format gives you an opportunity to experiment with the power and flexibility of HLSL even if you have only a minimal knowledge of HLSL syntax.
      • The Performance Workshop GDC 2007 is a series of guided lessons that are derived from the Performance Workshop that was presented at the Game Developers Conference 2007. The lessons are divided into three Visual C++ project files. Each project requires the student to find the performance bottleneck for the application, and fix the bottleneck in code.
      • The ParentalControlTimeLimits sample shows how an application can obtain the Windows Parental Control Time Limit information for the current user. The Time Limit features allow parents to control the time that their children spend on the computer. A game or application should be time limit aware, and provide appropriate feedback to a user whose account is under time restrictions.

      Known Issues with the June 2007 SDK

      PIX May Crash When Capturing Direct3D 10 Applications That Use Scissor Rects

      Using the Pixel History feature on a capture of a Direct3D 10 application that uses scissor rects may cause PIX to crash. Applications can can be work around this issue by temporarily disabling their usage of scissor rects. This issue will be fixed in a future release of the SDK.

      Microsoft Cross-Platform Audio Creation Tool (XACT)

      The Microsoft Cross-Platform Audio Creation Tool (XACT) has the following issues:

      • Users of XACT must explicitly create a new project (or open an existing one) before any object creation will be enabled. To create a new project after launching the authoring tool, select New Project from the File menu and specify the location and filename for the project.
      • Opening up the DSP RPC window for a reverb with many sounds may take a long time that increases exponentially with the number of sounds. Opening the window with 256 sounds takes approximately 30 seconds. RPC presets that modify the sounds directly, those with a "Send" option, are not subject to this delay.
      • The peak LED meters in the XACT auditioning monitor may get stuck. Users can choose to ignore this and let other playing content clear the stuck meters. As long as content is playing, the peak LED meters will eventually clear. Alternatively, users can right-click on the level meters and select Clear Clip LEDs.
      • To use the XACT user interface on Windows Vista, you must install the Microsoft .NET Framework 1.1. The .NET Framework can be downloaded from the Microsoft Download Center.
      These issues will be fixed in a future release of the SDK.

      Members Added To The X3DAUDIO_EMITTER and X3DAUDIO_LISTENER Structures

      Starting with the June 2007 SDK, two members, InnerRadius and InnerRadiusAngle, were added to the middle of the X3DAUDIO_EMITTER structure. Additionally, the pCone member was added to the X3DAUDIO_LISTENER structure. This change was done to enable listener cones and per-source inner-radius/elevation control in X3DAudio.

      HLSL Shader Compiler

      The HLSL shader compiler has the following issues:

      • There is an issue that causes FXC to crash when using the /Fx or /Fc flags which output hexadecimal or assembly representations to text files. FXC is still capable of writing binary effects and shaders to files and displaying assembly to the console window. A workaround for generating an assembly text file is to redirect the console assembly output into a file using the > command line operator. For example:

        fxc.exe /nologo /Tvs_4_0 /Emain myVertexShader.vs > myVertexAssembly.asm

      • The /Fc, /Fo, and /Fh command-line switches are mutually exclusive. If they are used together, the compiler will print the usage message and then fail.
      • If you have a loop in your pixel shader, and the compiler generates error X6077 where it previously did not generate this error, try one of the following work arounds:

        • Change the loop to the form "for(int=0;i<cnt;i++)"
        • If possible, unroll the loop using the [unroll] attribute.
      • If D3DXSHADER_USE_LEGACY_D3DX9_31_DLL is specified when obtaining the ID3DXEffectCompiler interface, subsequent calls to CompileEffect and CompileShader by using this interface use the D3DX9_31 code. Newer compilation flags, such as the legacy flag itself, are not valid with these older methods. This behavior is as expected, and will not change in future releases.

      These issues will be fixed in a future release of the SDK.

      DXGI: Cross-Process Shared Surfaces not Supported in the Reference Rasterizer

      Cross-process shared surfaces are not supported when using the Reference Rasterizer.

      DirectX Extensions for Autodesk 3ds Max and Alias Maya Have Been Removed

      Starting with the June 2007 SDK, the SDK no longer contains any of the extensions for Autodesk 3ds Max or Alias Maya.

      Direct3D 9 Only Version of DXUT Has Been Removed

      Starting with the June 2007 SDK, the SDK no longers contain the Direct3D 9 only version of DXUT found at %DXSDK_DIR%\Samples\C++\Common. All Direct3D 9 samples now use the newer version of DXUT which supports Direct3D 9 and Direct3D 10. This new version can be found in the current SDK at %DXSDK_DIR%\Samples\C++\DXUT.

      Symbols for DirectX

      The latest and most complete source for debugging symbols is the Microsoft Symbol Server. We recommend using the symbol server rather than using the included partial symbols package. For instructions on using the Microsoft Symbol Server, see

      Windows 95, Windows 98 and Windows ME Are Unsupported by the DirectX SDK

      Starting with the December 2006 SDK, the DirectX SDK does not support targeting of applications for Windows 95, Windows 98, Windows 98 SE, or Windows ME. The D3DX DLL does not install or load on these legacy operating systems. To support these legacy operating systems, use the October 2006 SDK or an earlier version.

      Installation Notes for All Platforms

      • This SDK installs on Windows XP, Windows Server® 2003, and Windows Vista using Visual Studio .NET 2003 or 2005.
      • Before installing the current DirectX SDK, remove previous versions of the DirectX SDK.
      • Some samples require that you install the latest Microsoft Windows SDK (Platform SDK) on your system.
      • If you encounter compilation issues related to the DirectX headers, make sure that the include directories in Visual Studio are set correctly. On the Win32 platform, make sure that there is a reference to the DirectX headers. "$(DXSDK_DIR)include" should appear in the include directory "$(VCInstallDir)Include."
      • SDK Installation to a network share is not supported. Some components (documentation and managed samples) do not run.
      • Several virus protection software applications interfere with SDK installation. They may require you to disable virus protection software until SDK installation is completed.
      • If you encounter the error message "A cabinet file is necessary for installation and cannot be trusted" during installation, your system may be corrupted, or cryptographic services may be disabled. To resolve the problem, try the following:

        1. Enable cryptographic services. On the Start menu, right-click My Computer, and then click Manage. The Computer Management window appears. In the left navigation pane, click Services and Applications. In the right pane, double click Services, and then double-click Cryptographic Services. The Cryptographic Services Properties property sheet appears. On the General tab, make sure that Service Status is Started, and that Startup Type is Automatic.
        2. If you are running Windows on a FAT32 drive, run scandisk.
        3. Try the resolution steps in Detecting digital signing issues in Windows XP.
        4. Try the resolution steps in You cannot install some updates or programs.
        5. Remove temporary files in %temp%. If you are installing end-user runtime, also remove "%windir%\system32\directx\websetup Error."
      • External firewall programs may indicate that the file InstallDeveloperFiles.exe wants to access the Internet. This is by design, and should be enabled.
      Installation Notes for Windows Vista

      Running Microsoft_DirectX_SDK.msi instead of setup.exe requires that you run as administrator. If you install by using setup.exe instead of the MSI, you will be prompted for elevated permissions before the installation can succeed.

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